OWLS: Hsieh reports 11.54% stake (10.2M shares)

Rhea-AI Filing Summary

OBOOK HOLDINGS INC. Schedule 13G filing shows Hsieh Chung Han beneficially owns 10,200,000 Class A common shares, equal to 11.54% of the class.

The holding is composed of 200,000 Class A and 10,000,000 Class B shares; the Class B shares are convertible into Class A on a one‑for‑one basis. The filing lists CUSIP 68373Q109 and is signed on 03/06/2026.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake does Hsieh Chung Han report in OWLS?

Hsieh Chung Han reports beneficial ownership of 10,200,000 Class A common shares, representing 11.54% of the Class A shares. This total treats convertible Class B shares on a one‑for‑one basis as Class A for the calculation.

How is the 10,200,000 share total composed for OWLS?

The total comprises 200,000 Class A common shares plus 10,000,000 Class B shares. The filing states Class B shares are convertible into Class A shares on a one‑for‑one basis and are counted as Class A here.

When was the Schedule 13G signed for OWLS?

The Schedule 13G is signed by Hsieh Chung Han with a signature date of 03/06/2026. The filing header also shows the date 10/16/2025 associated with the Class A Common Shares line.

Does the filing state how the shares were acquired for OWLS?

The filing states the Reporting Person acquired the securities prior to the issuer's listing on Nasdaq and beneficially owned more than five percent when the securities became registered. No purchase price or transaction dates are provided.

What voting and dispositive powers does Hsieh report for OWLS?

Hsieh reports sole voting power and sole dispositive power over 10,200,000 shares, with 0 shared voting and 0 shared dispositive power shown in the filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/06/2026 - 10:11 AM EST Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

OBOOK HOLDINGS INC.

(Name of Issuer)

Class A Common Shares

(Title of Class of Securities)

10/16/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP Number(s):

1

Names of Reporting Persons

HSIEH CHUNG HAN

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

TAIWAN, PROVINCE OF CHINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 10,200,000.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 10,200,000.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

10,200,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.5 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: OBOOK HOLDINGS INC.
(b)	Address of issuer's principal executive offices: 9F., NO. 28, WENCHENG RD., BEITOU DIST.,, TAIPEI CITY, 台灣, 112
Item 2.
(a)	Name of person filing: HSIEH CHUNG HAN
(b)	Address or principal business office or, if none, residence: 9F., No. 28, Wencheng Rd., Beitou Dist., Taipei City 112 Taiwan
(c)	Citizenship: Taiwan
(d)	Title of class of securities: Class A Common Shares
(e)	CUSIP No.: 68373Q109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 10,200,000 The Reporting Person beneficially owns 200,000 Class A Common Shares and 10,000,000 Class B Common Shares. The Class B Common Shares are convertible into Class A Common Shares on a one-for-one basis and are treated as Class A Common Shares for purposes of calculating beneficial ownership. The Reporting Person acquired the securities prior to the Issuer's listing on Nasdaq and beneficially owned more than five percent of the outstanding shares at the time the Issuer's securities became registered under the Securities Exchange Act of 1934.
(b)	Percent of class: 11.54 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 10,200,000
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 10,200,000
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

HSIEH CHUNG HAN

Signature:	/s/ HSIEH CHUNG HAN
Name/Title:	Individual
Date:	03/06/2026